STRUCTURE AND THERMODYNAMICS OF NIOBIUM NITRIDE IN EQUILIBRIUM WITH LIQUID FE-NB-N ALLOY

被引：2
|
作者：
JUNG, WG
KITA, Y
TANAKA, T
MORITA, Z
机构：
[1] Osaka Univ, Japan
来源：
TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS | 1988年 / 29卷 / 09期
关键词：
Iron and Steel Metallography--Microstructures - Steelmaking--Physical Chemistry - Thermodynamics;
D O I：
10.2320/matertrans1960.29.718
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
From the viewpoint of a fundamental study of steelmaking, the direct determination of the structure of niobium nitride in equilibrium with liquid Fe-Nb-N alloy has been carried out by a temperature x-ray diffraction technique. It was found that niobium nitride equilibrating with liquid Fe-(10 to about 20) mass% Nb-N alloy at 1813 K under a nitrogen pressure of 0.2 to about 0.6×105 Pa existed as the δ phase with fcc structures. From both the lattice parameter and the thermodynamic analysis it is estimated that the composition of the niobium nitride at 1813 K changes monotonously from NbN0.8 to NbN0.9 with the variation of nitrogen pressure from 0.2×105 to 1.0×105 Pa.
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页码：718 / 726
页数：9
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